Method for collecting carbon using exhaust gas discharge pressure

Abstract

The present disclosure relates to a method for collecting carbon using exhaust gas discharge pressure. According to the method for collecting carbon using exhaust gas discharge pressure, exhaust gas generated by a generator may be introduced into the housing of a collecting device by a connector, an absorber located inside the housing may be rotated by the discharge pressure of the exhaust gas introduced into the housing, an absorbent may be sprayed in the radial direction from the center of the absorber, a rotational flow generated by the rotation of the absorber may result in contact between the absorbent and the exhaust gas, CO2 in the exhaust gas may be absorbed into the absorbent by the contact, and the residual gas from which at least a part of the CO2 in the exhaust gas is separated may be discharged out of the collecting device.

Description

Carbon capture method using exhaust gas discharge pressure

[0001] The present disclosure relates to a carbon capture method using exhaust gas discharge pressure.

[0002] Generally, large-scale tower-scale facilities are operated in factories or on ships to capture carbon. However, because these facilities are subject to spatial constraints, they are difficult to apply to various carbon-generating devices, and it is practically impossible to reduce the costs of installing and maintaining existing large-scale facilities. Therefore, conventionally, RPB systems have been applied to solve these problems.

[0003] Conventional Rotating Packed Bed (RPB) systems capture carbon by bringing an absorbent into contact with flue gas using high-speed rotational centrifugal force. While this method has the advantage of efficiently treating high-concentration and high-temperature exhaust gases, it has the disadvantage of high energy consumption because it relies on the high-speed rotation of a motor to operate. In the long term, such high energy consumption increases operating costs and may partially hinder its effectiveness as an eco-friendly technology.

[0004] Furthermore, RPB systems require a complex configuration of motors and related components to maintain high-speed rotation. This results in maintenance and parts replacement costs, and there is a possibility of reduced operational stability, particularly as high-speed rotation can lead to rapid wear of components. In addition, high-speed motors are prone to generating noise and vibration, which may limit their application in specific industrial environments and negatively impact the quality of the working environment. Due to these characteristics, there are limitations to system miniaturization, necessitating simpler and more efficient alternative technologies.

[0005] The information described above disclosed in the background technology of this invention is intended only to enhance understanding of the background of the present invention and may therefore include information that does not constitute prior art.

[0006]

[0007] The present disclosure aims to create an environment in which an absorbent reacts with carbon by generating rotational force using the discharge pressure of the exhaust gas, without relying on the rotational force of a motor, during the process of capturing carbon from exhaust gas.

[0008] However, the technical problems that the present invention aims to solve are not limited to those described above, and other unmentioned problems can be clearly understood by those skilled in the art from the description of the invention below.

[0009]

[0010] A carbon capture method utilizing exhaust gas discharge pressure is provided, wherein exhaust gas generated from a generating unit is introduced into the housing of a capture device by means of a connecting unit, an absorbing unit located inside the housing is rotated by the discharge pressure of the exhaust gas introduced into the housing, an absorbent is sprayed radially from the center of the absorbing unit, contact occurs between the absorbent and the exhaust gas by the rotational flow generated by the rotation of the absorbing unit, CO2 in the exhaust gas is absorbed by the absorbent through the contact, and the residual gas from which at least a portion of the CO2 in the exhaust gas has been separated is discharged to the outside of the capture device, the exhaust gas introduced into the housing is discharged in a direction parallel to the tangential direction of the absorbing unit within the housing through the connecting unit, and the absorbing unit rotates by receiving the discharge pressure of the exhaust gas through a blade arranged on its outer periphery to face the direction in which the exhaust gas is discharged.

[0011] In addition, the absorbent liquid, which is the absorbent that has absorbed CO2, can be discharged through the outlet formed at the bottom of the housing by its own weight.

[0012] In addition, the absorbent moves radially from the center of the absorption section by centrifugal force, and as the amount of flue gas inflow increases, it moves from the outer edge of the absorption section to the center, thereby allowing the absorbent to absorb CO2 from the flue gas along the intersecting movement paths.

[0013] Additionally, the absorbent is sprayed into a reaction section formed of a porous material or a porous structure, and the reaction section may include a section composed of one or more of a curve and a fold among a section extending in the radial direction.

[0014] In addition, residual gas can be discharged through the outer tube of the fluid transfer pipe connected to the housing, and the absorbent can be supplied into the housing through the inner tube.

[0015] In addition, the spraying of the absorbent can be carried out when the rotational speed is greater than the number of rotations at which the absorbent can be moved radially in the absorbent part by centrifugal force.

[0016] In addition, the collection device further includes a control unit, and the control unit can control a pressure boosting means to compensate for the discharge pressure if the rotational speed is less than the rotational speed based on a preset rotational speed of the absorption unit.

[0017] In addition, the outer tube is connected to the housing of an adjacent collection device, so that multiple collection devices can be connected in series.

[0018]

[0019] According to one embodiment of the present disclosure, a carbon capture method using exhaust gas discharge pressure can be provided, in which, during the process of capturing carbon from exhaust gas, rotational force is generated by utilizing the exhaust gas discharge pressure without relying on the rotational force of a motor, thereby causing the absorbent and carbon to react.

[0020] The following drawings attached to this specification illustrate preferred embodiments of the present invention and serve to further enhance understanding of the technical concept of the present invention together with the detailed description of the invention provided below; therefore, the present invention should not be interpreted as being limited only to the matters described in such drawings.

[0021] FIGS. 1 and FIGS. 2 are exploded perspective views of a collection device according to one embodiment of the present disclosure.

[0022] FIG. 3 is a schematic diagram showing the transmission of exhaust gas generated from a generating unit that generates exhaust gas containing carbon according to one embodiment of the present disclosure to a collection device.

[0023] FIG. 4 is a perspective view of a collection device according to one embodiment of the present disclosure.

[0024] FIG. 5 is a drawing showing an absorbing part and a housing containing the absorbing part in a collection device according to one embodiment of the present disclosure.

[0025] FIG. 6 is a cross-sectional view showing the interior of a housing according to one embodiment of the present disclosure.

[0026] FIG. 7 is a cross-sectional view of a collection device including a fluid transfer pipe according to one embodiment of the present disclosure.

[0027] FIG. 8 is a cross-sectional view of a collection device according to one embodiment of the present disclosure.

[0028] FIG. 9 is a diagram illustrating a process of capturing carbon from exhaust gas according to one embodiment of the present disclosure.

[0029] Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings. Prior to this, terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings. Instead, based on the principle that the inventor can appropriately define the concepts of terms to best describe their invention, they should be interpreted in a meaning and concept consistent with the technical spirit of the present invention. Therefore, the embodiments described in this specification and the configurations illustrated in the drawings are merely some of the most preferred embodiments of the present invention and do not represent all of the technical spirit of the present invention. It should be understood that various equivalents and modifications capable of replacing them may exist at the time of filing this application.

[0030] Additionally, as used herein, “comprise, include” and / or “comprising, including” specify the presence of the mentioned features, numbers, steps, actions, parts, elements, and / or groups thereof, and do not exclude the presence or addition of one or more other features, numbers, actions, parts, elements, and / or groups.

[0031] Additionally, to aid in understanding the invention, the attached drawings are not drawn to actual scale, and the dimensions of some components may be exaggerated. Furthermore, the same reference numerals may be assigned to identical components in different embodiments.

[0032] The statement that two subjects of comparison are 'identical' means that they are 'substantially identical.' Therefore, substantial identity may include deviations considered low in the industry, for example, deviations within 5%. Additionally, the statement that a parameter is uniform in a given area may mean that it is uniform from an average perspective.

[0033] Although terms such as "first," "second," etc., are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used merely to distinguish one component from another, and unless specifically stated otherwise, the first component may also be the second component.

[0034] Throughout the specification, unless specifically stated otherwise, each component may be singular or plural.

[0035] The fact that any configuration is placed on the "upper (or lower)" of a component or on the "upper (or lower)" of a component may mean not only that any configuration is placed in contact with the upper (or lower) surface of said component, but also that another configuration may be interposed between said component and any configuration placed on (or below) said component.

[0036] Furthermore, where it is stated that one component is "connected," "coupled," or "connected" to another component, it should be understood that while said components may be directly connected or connected to each other, another component may be "interposed" between each component, or that each component may be "connected," "coupled," or "connected" through another component. Additionally, when it is stated that a part is electrically coupled with another part, this includes not only cases where they are directly connected but also cases where they are connected with another component in between.

[0037] Throughout the specification, "A and / or B" means A, B, or A and B unless specifically stated otherwise. That is, "and / or" includes any combination or any combination of the enumerated items. "C to D" means C or more and D or less, unless specifically stated otherwise.

[0038] The terms used in this specification are intended to describe embodiments of the present disclosure and are not intended to limit the present disclosure.

[0039] The following relates to a carbon capture method using the exhaust gas discharge pressure of the present invention, and discloses a method for capturing CO2 from exhaust gas through a capture device configured such that a generating part for generating exhaust gas and the generated exhaust gas are connected by a connecting part. In the following, to facilitate understanding of this capture method, the mechanism of the capture device will be explained in detail.

[0040] FIGS. 1 and 2 are exploded perspective views of a collection device (10) according to an embodiment of the present disclosure. Referring to FIGS. 1 and 2, according to an embodiment of the present disclosure, a carbon collection method using exhaust gas discharge pressure (hereinafter, collection device (10)) may include a housing (100) and an absorption unit (200). Here, the housing (100) may be configured to be connected to a generating unit (20) that generates exhaust gas so that exhaust gas is introduced. And, the absorption unit (200) may be positioned inside the housing (100) so as to be freely rotatable. Specifically, the absorption unit (200) may be rotated within a predetermined rotational speed range by the exhaust gas discharge pressure.

[0041] Furthermore, the collection device (10) may further include a fluid transfer pipe (300). The fluid transfer pipe (300) can guide the transfer of exhaust gas and the transfer of absorbent. The fluid transfer pipe (300) will be described in more detail with reference to FIGS. 7 and FIGS. 8 below.

[0042] Meanwhile, the fluid transfer pipe (300) may be connected to the housing (100), and the absorption section (200) may be provided inside the housing (100). The housing (100) and the absorption section (200) may be arranged coaxially. Specifically, the housing (100) may include a main housing (110) and a first cover (101) and a second cover (102) arranged on both sides of the main housing (110). The first cover (101) may be provided so that the main housing (110) can be kept airtight, and is connected to the absorption section (200) provided inside the housing (100) by a bearing so that the absorption section (200) can rotate freely.

[0043] Of course, the absorption section (200) is connected to the first cover (101) and the second cover (102) by bearings, respectively, so that it can rotate freely. However, in the case of the second cover (102), the part in contact with the main housing (110) is connected to maintain airtightness, but a part of the fluid transfer pipe (300) can be opened so that it can be inserted into the housing (100). Accordingly, the second cover (102) can be connected to the inside of the housing (100) and the fluid transfer pipe (300) through airtight connection with the housing (100) and airtight connection with the fluid transfer pipe (300). Through this, the exhaust gas inside the housing (100) can be transferred to the fluid transfer pipe (300).

[0044] According to one embodiment of the present disclosure, a reaction between exhaust gas and an absorbent is carried out in the internal space of the housing (100), allowing the absorbent to absorb CO2. The absorbent part (200) is rotated by the incoming exhaust gas, and the absorbent sprayed from the center of the absorbent part (200) moves along the surface of the absorbent part (200) by centrifugal force, and can react with the exhaust gas during the movement process. Through the reaction, CO2 in the exhaust gas is absorbed by the absorbent and can be released to the inner wall of the housing (100). The released absorbent can move downward along the inner wall of the housing (100) by its own weight.

[0045] FIG. 3 is a schematic diagram illustrating the transmission of exhaust gas from a generating unit (20) that generates exhaust gas containing carbon according to one embodiment of the present disclosure to a collection device (10). Referring to FIG. 3, when exhaust gas is generated by the generating unit (20), the generated gas can be guided to flow into the collection device (10). This can be connected through a predetermined piping structure. Here, the exhaust gas may be, for example, combustion gas. Accordingly, the generating unit (20) may be an automobile, one of the facilities of a factory, or equipment installed on a ship. Any configuration that generates exhaust gas containing carbon, such as combustion gas, in this way may correspond to the generating unit (20) of the embodiment.

[0046] Since there are various configurations that can serve as the generating unit (20), the structure connected to the collection device (10) is not specified, but it is desirable that it be connected through a structure for inducing gas and transmitted to the collection device (10) without loss of discharge pressure of the generated gas through airtightness. This may be a desirable structure that prevents loss of discharge pressure, given that the present disclosure performs rotational movement through the discharge pressure of exhaust gas without using a separate motor or other configuration for the power required for rotational movement.

[0047] Additionally, the generating unit (20) may be connected to a single collection device (10), but may also be connected to multiple collection devices (10) considering the exhaust gas discharge capacity of the generating unit (20) and the processing capacity of the collection device (10). Depending on the concentration and discharge amount of exhaust gas, multiple collection devices (10) may be connected to the generating unit (20) through one or more connection methods, such as parallel and series.

[0048] FIG. 4 is a perspective view of a collection device (10) according to one embodiment of the present disclosure. Referring to FIG. 4, the housing (100) may include an inlet connected to a generating unit (20) so as to maintain airtightness so that exhaust gas is introduced, a main housing (110) expanded to allow rotational flow of the exhaust gas introduced through the inlet, and a discharge pipe (104) for discharging an absorbent that has reacted with carbon in the exhaust gas to the outside of the main housing (110). Here, the fluid flow may be formed in an exhaust gas supply direction (f1) and an absorbent discharge direction (f2). Here, the absorbent may be an absorbent that has captured CO2 through a reaction between the absorbent provided inside the housing (100) and the exhaust gas. Since the absorbent may be in a liquid state, the absorbent may be in a liquid state. Accordingly, the absorbent may move downward by its own weight and may be moved through the discharge pipe (104) which is opened downward at the bottom of the housing (100). Subsequently, the absorbent solution is separated back into the absorbent and CO2 in their pre-reaction state, allowing the absorbent to be reused, and the CO2 can be liquefied and stored in a storage medium or reused through phase change, etc.

[0049] Meanwhile, the reaction between the absorbent and the exhaust gas inside the housing (100) can be more actively facilitated by the rotational flow formed by the pressure of the exhaust gas flowing into the housing (100). As described above, the absorbing part (200) can be positioned inside the housing (100) to allow free rotation, and the exhaust gas can be introduced into the housing (100) to facilitate rotation of the absorbing part (200). For example, as illustrated, the exhaust gas is introduced in a tangential direction into the absorbing part (200) located inside the housing (100), such as being connected in a tangential direction to the main housing (110), to facilitate rotation.

[0050] Meanwhile, in addition to the exhaust gas supply direction (f1) and the absorbent liquid discharge direction (f2), a residual gas discharge direction (f3) and an absorbent supply direction (f4) may be formed as fluid flow. Here, residual gas refers to gas in which part or all of the CO2 is removed by reacting with the absorbent in the exhaust gas. Preferably, the goal may be to capture, for example, 90% or more of the CO2 contained in the exhaust gas flowing into the housing (100), and in this case, a collection device (10) connected in series may be operated to reach any desired amount of collection.

[0051] Meanwhile, the exhaust gas introduced into the housing (100) can be discharged as residual gas through the fluid transfer pipe (300) after the reaction. The residual gas can be discharged along the exhaust path (331a), which is a path formed through the exhaust pipe (330), by sequentially passing through the first outer pipe (320a) and the second outer pipe (320b). The discharged gas can be released into the atmosphere, transferred to a predetermined treatment system, or repeatedly introduced into the inlet of another adjacent collection device (10). That is, as described above, it can be introduced into adjacent collection devices (10) connected in series to perform a collection process so that the absorbent reacts with the remaining CO2 contained in the residual gas.

[0052] Here, the first outer tube (320a) and the second outer tube (320b) may be formed integrally, but as illustrated, the second outer tube (320b), to which the exhaust pipe (330) is connected, is provided separately from the first outer tube (320a) so that they can be assembled together in order to selectively position the exhaust passage (331a). The first outer tube (320a) and the second outer tube (320b) may be connected by a first flange portion (321). The second flange portion (322) may be a means of connecting the second outer tube (320b) and the inner tube (340).

[0053] FIG. 5 is a drawing showing an absorption section (200) and a housing (100) housing the absorption section (200) in a collection device (10) according to one embodiment of the present disclosure. Referring to FIG. 5, the absorption section (200) may include a blade (211) facing the direction in which exhaust gas flows into the outer periphery. The blade (211) may be fixed to a plate (210). The plate (210) may be composed of a pair, and a plurality of plates may be fixed radially between the pair of plates (210).

[0054] A space may be provided between a pair of plates (210) where a reaction section (220) is located. The reaction section (220) may have a predetermined thickness and may be formed in the form of a perforated plate (210) or made of a porous material. Alternatively, it may have a porous structure. Furthermore, the reaction section (220) may be in a shape that extends radially from the center while having sections such as bends, curves, or flat surfaces. This structure may be capable of increasing the reaction rate by allowing an absorbent to be sprayed from the center of the reaction section (220) and come into contact with the exhaust gas through the large surface area of ​​the reaction section (220). Although the illustrated reaction section (220) is depicted as having a perforated central portion, it is understood that various embodiments described above may be incorporated.

[0055] Meanwhile, the exhaust gas flowing into the housing (100) may form a circular flow direction (F1) due to the shape of the housing (100). As the amount of exhaust gas flowing in the flow direction (F1) increases, it pushes the blade (211) and rotates the absorption section (200), while being guided by the blade (211) and flowing into the space between the plates (210). The exhaust gas flowing into the space between the plates (210) may rotate and move from the outside of the reaction section (220) due to the discharge pressure of the exhaust gas, and then move toward the center as the amount of exhaust gas increases, and the absorbent may move along the surface of the reaction section (220) radially outward from the center of the reaction section (220). Through this movement, the exhaust gas comes into contact with the absorbent and a reaction occurs, so that CO2 contained in the exhaust gas can be absorbed by the absorbent.

[0056] FIG. 6 is a cross-sectional view showing the interior of a housing (100) according to one embodiment of the present disclosure. Referring to FIG. 6, an inlet may be connected to the main housing (110) so that exhaust gas is discharged inside the main housing (110) in a direction parallel to the tangential direction of the absorption section (200). Here, the tangential direction may be a tangent that contacts the outer periphery of the plate (210) on the illustrated side view. This direction of exhaust gas inflow allows the exhaust gas discharge pressure to be transmitted to the blade (211) to rotate the absorption section (200). Continuous inflow of exhaust gas can cause the exhaust gas to fill up to the center of the housing (100). That is, the exhaust gas can be filled from the outer part of the absorption section (200) to the center.

[0057] On the other hand, the absorbent is sprayed in the spraying direction (S1) from the center of the reaction section (220) through the nozzle (311) formed in the spray head (310) and can be moved radially by centrifugal force on the rotating reaction section (220). Thus, the reaction can proceed during the process in which the absorbent and the exhaust gas move in opposite directions and cross each other.

[0058] The absorbent liquid, which is an absorbent that reacts with CO2 in the exhaust gas, can be discharged to the outside of the housing (100) through the discharge pipe (104). The discharge pipe (104) can be connected to the lower part of the main housing (110). Therefore, when the absorbent liquid moves downward along the inner wall of the housing (100) due to its own weight, it can be discharged through the discharge pipe (104). The discharged absorbent liquid can be separated into the absorbent and CO2, and each can be reused.

[0059] Additionally, as described above, the absorption section (200) may include a reaction section (220) formed of a porous material or a porous structure. The structure of such a reaction section (220) can improve reaction efficiency by delaying fluid permeation in the radial direction and extending the reaction time. To this end, structures such as bending, curvature, and perforation may be provided in the entire section extending in the radial direction.

[0060] FIG. 7 is a cross-sectional view of a collection device (10) including a fluid transfer pipe (300) according to one embodiment of the present disclosure. Referring to FIG. 7, the fluid transfer pipe (300) is composed of a double pipe including an inner pipe (340) and an outer pipe (320; 320a, 320b), the outer pipe (320; 320a, 320b) is connected to the housing (100) so that exhaust gas introduced into the housing (100) is discharged, and the inner pipe (340) extends from the inner side of the outer pipe (320; 320a, 320b) into the housing (100) so that an absorbent can be sprayed into the absorption part (200). Specifically, the outer tube (320; 320a, 320b) can form an outer flow path of the double tube so that the exhaust gas is discharged as residual gas after reacting with the absorbent, and the inner tube (340), which is an inner flow path, can be provided to form a flow path that provides the absorbent to the housing (100).

[0061] The inner tube (340) can receive an absorbent through an external supply means and supply it into the housing (100) through the inner tube (340) at a predetermined pressure. At this time, the absorbent can be sprayed into the housing (100) through a spray head (310) that sprays the absorbent. The spray head (310) includes a plurality of nozzles (311), and a plurality of nozzles (311) can be formed on the outer circumference of the spray head (310) so as to spray the absorbent radially.

[0062] That is, the fluid transfer pipe (300) is connected to the extended end of the inner pipe (340) and extends toward the housing (100), and a spray head (310) can be connected to the extended end. The spray head (310) can spray an absorbent into the reaction section (220), which is a component of the absorption section, through a plurality of nozzles (311). The condition under which the absorbent is sprayed inside the housing (100) may be when the absorption section (200) is rotating. This can be determined by a control unit (not shown) based on whether the absorption section (200) is rotating. Of course, control is not limited to these conditions, and as an example of control, the supply of the absorbent through the inner pipe (340) to the reaction section (220) may be carried out when the absorption section (200) is rotated by exhaust gas.

[0063] Meanwhile, the outer tube (320; 320a, 320b) may be provided with a first outer tube (320a) directly connected to the housing (100) and a second outer tube (320b) connected to the first outer tube (320a). Here, the second outer tube (320b) may have an exhaust pipe (330) formed with a flow path through which residual gas is discharged to the outside. The outside where the residual gas is discharged may be the atmosphere, an adjacent other collection device (10), or a device for a predetermined treatment. That is, the outside may be a device or space from which the gas is discharged after being processed in the collection device (10) of the present invention.

[0064] FIG. 8 is a cross-sectional view of a collection device (10) according to one embodiment of the present disclosure. Referring to FIG. 8, the residual gas discharge direction (f3) and the absorbent supply direction (f4) are indicated. The space formed between the outer tube (320; 320a, 320b) and the inner tube (340) can function as a flow path for discharging residual gas. The fluid flow directions formed in the inner tube (340) and the outer tube (320; 320a, 320b) may be opposite to each other. Fluid flow in the inner tube (340) entering the housing (100) and fluid flow in the outer tube (320; 320a, 320b) discharging from the housing (100) may be formed.

[0065] Since the direction in which the exhaust gas flows in is parallel to the tangential direction of the housing (100), the velocity of the exhaust gas is greatest immediately after inflow, so the exhaust gas can rise from the outside to the inside as it flows into the housing (100). During this process, it can come into contact with and react with the absorbent moving from the inside to the outside. That is, the absorbent moves radially from the center of the housing (100), and the exhaust gas flowing into the housing (100) moves from the radial direction to the center, and the absorbent can absorb CO2 contained in the exhaust gas through contact with the absorbent along the path of movement of the exhaust gas.

[0066] FIG. 9 is a diagram illustrating a process of capturing carbon from exhaust gas according to one embodiment of the present disclosure. Referring to FIG. 9, exhaust gas generation (S10), exhaust gas inflow (S20), absorbent injection (S30), CO2 absorption (S40), and absorption liquid separation (S50) can be performed sequentially.

[0067] The exhaust gas generation (S10) stage refers to the generation of exhaust gas from the generation unit (20). Depending on the case, the collection device (10) may be operated in conjunction with the generation unit (20) to detect the generation of exhaust gas through the operation of the generation unit (20). The exhaust gas generation is ensured to be transmitted to the collection device (10) in a hermetic manner so that at least the discharge pressure of the generated exhaust gas is not lost.

[0068] In the exhaust gas inflow (S20) stage, exhaust gas delivered from the generating unit (20) flows into the housing (100) and can rotate the absorption unit (200). The rotating absorption unit (200) can be rotated at a predetermined rotational speed. For example, when aiming to rotate at 500 RPM, a portion of the exhaust gas can be bypassed or additional external air can be supplied to increase the pressure (flow rate) in order to control the rotational speed. Pressure boosting means such as a compressor or a blower for this purpose may be optionally applied.

[0069] The absorbent injection (S30) step can be performed during the rotation of the absorption section (200). The absorbent can be directly injected into the reaction section (220), which is a component of the absorption section (200). Centrifugal force is generated by the rotation of the reaction section (220), and the absorbent directly injected onto the surface of the reaction section (220) by the centrifugal force can move outward along the surface of the reaction section (220). That is, since the rotation of the absorption section (200) is caused by the inflow of exhaust gas, contact between the exhaust gas and the absorbent can be made.

[0070] In the CO2 absorption (S40) step, the absorbent and the exhaust gas in contact with each other react to form a liquid absorbent, which can be moved outward by the rotation of the absorption unit (200). As the exhaust gas with a relatively low density flows into the housing (100), it can be moved inward via the outer side. Accordingly, in the absorbent separation (S50) step, the absorbent and absorbent with a relatively high density can be moved outward and moved to the discharge pipe (104), and the exhaust gas can be moved to the outer pipe (320; 320a, 320b) which is connected to the central part of the housing (100). The absorbent that is moved to and stored in the discharge pipe (104) can be separated into CO2 and absorbent by a predetermined treatment and each can be reused, etc.

[0071]

[0072] Although the present invention has been described above with reference to limited embodiments and drawings, the present invention is not limited thereto, and it is obvious that various modifications and variations are possible within the scope of the technical spirit of the present invention and the equivalent scope of the claims described below by those skilled in the art to which the present invention belongs.

[0073] FIG. 10 is a drawing illustrating a carbon gas capture method according to one embodiment of the present disclosure.

[0074] FIG. 10 is a drawing illustrating a method for capturing carbon dioxide gas according to one embodiment of the present disclosure. Referring to FIG. 10, the capture method of the present invention may be implemented according to the example disclosed in the flowchart of FIG. 10. The control unit intervention (P1), flue gas inflow (P10), rotational speed generation (P20), rotational speed compensation (P30), pressure boosting means intervention (P31), absorbent injection (P40), and fluid discharge (P50) described in FIG. 10 may include all of the operation mechanisms of the capture device described through FIG. 1 to FIG. 9.

Claims

1. The exhaust gas generated from the generating part flows into the housing of the collection device through the connection part, and The absorption part located inside the housing is rotated by the discharge pressure of the exhaust gas flowing into the housing, and An absorbent is sprayed radially from the center of the above-mentioned absorption part, and Contact between the absorbent and the exhaust gas occurs due to the rotational flow generated by the rotation of the absorption part, and CO2 in the flue gas is absorbed by the absorbent through the above contact, and The residual gas from which at least a portion of the CO2 has been separated in the above exhaust gas is discharged to the outside of the above capture device, and The exhaust gas flowing into the housing is discharged through the connection in a direction parallel to the tangential direction of the absorption part within the housing, and The above absorption part is a blade positioned on the outer periphery to face the direction in which the exhaust gas is discharged, which rotates upon receiving the discharge pressure of the exhaust gas. Carbon capture method using exhaust gas discharge pressure.

2. In Paragraph 1, A carbon capture method using exhaust gas discharge pressure, wherein the absorbent liquid, which is the absorbent that has absorbed the CO2, is discharged through an outlet formed at the bottom of the housing by its own weight.

3. In Paragraph 1, The absorbent moves radially from the center of the absorption section by centrifugal force, and the exhaust gas moves from the outer edge of the absorption section to the center as the inflow increases, thereby, A carbon capture method using flue gas discharge pressure, wherein the absorbent absorbs CO2 from the flue gas on mutually intersecting movement paths.

4. In Paragraph 1, A carbon capture method using exhaust gas discharge pressure, wherein the absorbent is sprayed into a reaction section formed of a porous material or a porous structure, and the reaction section includes a section formed of one or more of a curve and a fold among a section extending in the radial direction.

5. In Paragraph 1, A carbon capture method using exhaust gas discharge pressure, wherein the residual gas is discharged through the outer tube of a fluid transfer pipe connected to the housing, and the absorbent is supplied into the housing through the inner tube.

6. In Paragraph 1, A carbon capture method using exhaust gas discharge pressure, wherein the injection of the absorbent is carried out when the rotational speed is greater than that at which the absorbent can be moved radially in the absorption portion by centrifugal force.

7. In Paragraph 6, The above-mentioned capture device further includes a control unit, and A carbon capture method using exhaust gas discharge pressure, wherein the above-described control unit controls a pressure boosting means to compensate for the discharge pressure when the rotational speed is less than the rotational speed based on a preset rotational speed of the absorption unit.

8. In Paragraph 5, A carbon capture method using exhaust gas discharge pressure, wherein the above-mentioned outer tube is connected to the housing of an adjacent capture device, so that a plurality of capture devices are connected in series.

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